MATLAB: Matrix Filling

matrix manipulation

hi MATLABERS,
Im stuck at this problem. I want to make a matrix that does the following:
say i have the first row of the matrix [12 14 18]. now a get a random integer and it comes out to be 14. I want to store that 14 right under the 14 like so:
[12 14 18;0 14 0]
 12 14 18
 0  14  0  
      or
12 14 18
   14 
how can i do that. please help

Best Answer

 index = find(A(1,:) == 14);
 A = cat(1,A,zeros(1,size(A,2)));
 A(2,index) = 14;
Added after Sean's point -- if the integer is not present in the row, you'll just get a row of zeros.
   index = find(A(1,:) == 59);
   A = cat(1,A,zeros(1,size(A,2)));
   A(2,index) = 59;
Related Question